Restricted SharePoint Search is an answer for customers who don’t like the idea of Copilot for Microsoft 365 being able to find documents in any site the signed-in user has access to. A curated list of 100 sites will be available to Copilot along with user data in OneDrive and files that have been shared with or worked on by a user. Will this scheme allow tenants to deploy Copilot while they sort out site permissions? Time will tell, starting in April 2024.
https://office365itpros.com/2024/03/07/restricted-sharepoint-search/
